Path following AI

Wacov · 23 Nov 2009, 22:45

In sketchyphysics

Just thought I'd make anyone who hasn't recently graced the WH aware of this. I've developed a system that lets cars (or boats) drive themselves around a course. It supports multiple routes, and multiple vehicles very easily, and there's a detailed tutorial for installing it on models. I'll be building on top of this basic system to allow more complex behaviours, and the tutorial and up-to-date info can be found at:
http://sketchupusers.freeforums.org/easy-ai-now-with-tutorial-t73-10.html#p945

Ecuadorian · 23 Nov 2009, 22:51

Thank you, I render videos from time to time so it'll be totally worth to learn how to do this.

Davidfi1 · 24 Nov 2009, 05:41

Very nice - Cool

Could be nice to have a tool bar for more easy use.
The "nodes" could be in flag shape, and outomatically named ect...
( set to "ignore" )

Thank you
David.

Node flag

Wacov · 24 Nov 2009, 13:42

Toolbar... ok, here you go:
AI Tools.zip
Same deal as normal plugins, unzip in your plugins folder. To register a vehicle as AI, select all parts, including hidden parts, and use the 'Set AI' tool. To auto-number your nodes, create them in order (that's important), select them all, and use the 'Number route' tool. It removes existing numbers in the name, so you can re-use the tool, after adding extra nodes, for example.

Davidfi1 · 24 Nov 2009, 21:12

WOW !!! - It is beautiful - incredible model !!!
Still need more instruction on how to use the Toolsbar for all the tasks.
I am missing the tool for inserting the script to the "floor" and seting the motors control.

P.S.
I don't understand the name AI - what does it stend for?
Nice job !
Thank you.

Wacov · 24 Nov 2009, 21:59

AI... Artificial intelligence. Just the sweeping term for computer-controlled opponents, the main intention of the system. With the floor, you need SP3 X Apr2 or above, and the 'ontick' field will be visible under properties in the UI, with an object selected. Just copy/paste the main code from the tutorial into there. I found out how SP stores the ontick scripts though, so I could automate that as well. Setting the motor controllers, again, in the UI, paste the command into the motor's controller field.

And you're welcome

Davidfi1 · 30 Nov 2009, 20:06

Hi Wacov
I think I did every thing correctly
Could you check why the Red car does not move correctly?

Thank you.
david.

RedCar

Wacov · 30 Nov 2009, 20:50

Looks like you didn't register all parts of the car... select everything, every part of it, including wheels, steering assembly, everything with an AI-controlled joint inside, and use the AI registration tool. After that the axes of the car are wrong, but that's easily fixed, and covered in the tutorial.

Davidfi1 · 30 Nov 2009, 22:11

Didn't work
Could you post a working demo done with the tut?
same model a little bit cleaner
Thanx.

Wacov · 1 Dec 2009, 10:10

You presumably exploded and re-grouped the main body, so its ontick field is empty

Here's a couple of example models, they both use slightly outdated code though:
http://sketchup.google.com/3dwarehouse/details?mid=63cfe4da6cd759a3d36844afc91c4691
http://sketchup.google.com/3dwarehouse/details?mid=5cba40fd49a9606c6cd8ad826e9017b8

Davidfi1 · 5 Dec 2009, 08:41

Wacov
I took your model and replaced the parts inside with the ones in my model.

The only problem now is to make my Track "Obey the traffic laws"
Well - I would like it to stay in the correct lane....

The problem is I do not understand what is going on.
It would be grate if you could explain what I should do

AI Red Track
P.S it takes about 15 seconds to start after I press run - Is it normal?
Thank you.
David.